Randhir Kumar Singh

7 Questions 7 Answers 0 Followers

Questions related from Randhir Kumar Singh

How to avoid post weld heat treatment cracking in HAZ regions in nickel base superalloy XH67MB?

After welding with TIG, PWHT cracks are observed in the HAZ regions in nickel base superalloy XH67MB. So what could be done to avoid / overcome this problem.

01 August 2018 1,290 1 View

What would be the reason for having more fatigue life in compression start than tension start?

How does the initial loading part effect the fatigue life under similar conditions of the tests?

15 May 2016 4,827 6 View

Why is there a decrease in ductility in polycrystalline Ni base superalloy having 18 Vol% precipitates of 10-20 nm size

The two types of carbides present in the superalloy are M23C6 carbides at the grain boundaries and MC type carbides in the matrix.

19 December 2015 3,669 5 View

How can I find the partial pressure of mixed gas when the flow rate of the gas is known?

gas consist of 15%CO2-3.5%O2-0.25%SO2 and balance N2. The flow rate of the pre-mixed gas is 80 ml/min. I want to the partial pressure of SO2, O2, S and other gases at temperature of 800 C

15 April 2015 9,669 3 View

Why is necking not found in torsion testing while it is found in uniaxial tensile testing?

What is the reason for the necking?

23 January 2015 6,838 6 View

How to find which oxides are formed after oxidation or corrosion and how to quantify it? Is it possible to quantify from the EDS elemental analysis ?

oxidation after 100 h in TGA of Ni base superalloy..

22 January 2015 3,367 16 View

How can I use peak matching to find an unknown compound from XRD data in either JCPDF/PCPDF or Xpert Highscore?

I would like know how to do peak matching to find the unknown compound from the XRD data using the either JCPDF/PCPDF or Xperthighscore. How can I efficiently use these softwares? Is it necessary...

29 March 2014 8,102 3 View